redesign of config format

apps/nspanel-lovelace-ui/luibackend/helper.py

@@ -0,0 +1,40 @@
+import colorsys
+import math
+
+def scale(val, src, dst):
+    """
+    Scale the given value from the scale of src to the scale of dst.
+    """
+    return ((val - src[0]) / (src[1]-src[0])) * (dst[1]-dst[0]) + dst[0]
+
+def hsv2rgb(h, s, v):
+    hsv = colorsys.hsv_to_rgb(h,s,v)
+    return tuple(round(i * 255) for i in hsv)
+def pos_to_color(x, y):
+    r = 160/2
+    x = round((x - r) / r * 100) / 100
+    y = round((r - y) / r * 100) / 100
+    
+    r = math.sqrt(x*x + y*y)
+    sat = 0
+    if (r > 1):
+        sat = 0
+    else:
+        sat = r
+    hsv = (math.degrees(math.atan2(y, x))%360/360, sat, 1)
+    rgb = hsv2rgb(hsv[0],hsv[1],hsv[2])
+    return rgb
+
+def rgb_brightness(rgb_color, brightness):
+    red = rgb_color[0]/255*brightness
+    green = rgb_color[1]/255*brightness
+    blue = rgb_color[2]/255*brightness
+    return [red, green, blue]
+
+def rgb_dec565(rgb_color):
+    red = rgb_color[0]
+    green = rgb_color[1]
+    blue = rgb_color[2]
+    # take in the red, green and blue values (0-255) as 8 bit values and then combine
+    # and shift them to make them a 16 bit dec value in 565 format. 
+    return ((int(red / 255 * 31) << 11) | (int(green / 255 * 63) << 5) | (int(blue / 255 * 31)))